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Marquise|Natural|GIA

1.00ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 7558350140

Certificate GIA 7558350140

Diamond specifications and retailer prices

From $2,250 SGD
As of November 6, 2026
Save $3,310 SGD (60%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: $6,654 SGD at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7558350140. Listed at 26 retailers as of November 4, 2026, with a 147% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.79°
Pavilion angle39.73°
OriginNatural
Grading LabGIA
CertificateGIA 7558350140
Dimensions9.44 × 5.10 × 3.34 mm
L/W Ratio1.85
Culet sizeNone
Top View
9.44 mm5.10 mm1.00 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7558350140
Side View
Table 60.0%Crown 40.79°Girdle: STK-VTKPavilion 39.73°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,654 SGD|Low: $2,081 SGD|High: $6,654 SGD|Avg: $3,333 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
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Retailer 11
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Retailer 19
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Retailer 23
Retailer 24
Retailer 25
Retailer 26
Retailer 27
Retailer 28
Retailer 29
Retailer 30
November 7, 2026
Retailer 11$2,250 SGD
Retailer 27$2,436 SGD
Retailer 4$2,497 SGD
Retailer 30$2,512 SGD
Retailer 8$2,535 SGD
Retailer 14$2,593 SGD
Retailer 15$2,604 SGD
Retailer 3$2,661 SGD
Retailer 16$2,716 SGD
Retailer 6$2,884 SGD
Retailer 12$2,884 SGD
Retailer 20$2,950 SGD
Retailer 23$3,010 SGD
Retailer 5$3,013 SGD
Retailer 29$3,017 SGD
Retailer 24$3,130 SGD
Retailer 7$3,151 SGD
Retailer 9$3,230 SGD
Retailer 21$3,253 SGD
Retailer 17$3,327 SGD
Retailer 18$3,332 SGD
Retailer 19$3,332 SGD
Retailer 2$3,367 SGD
Retailer 22$3,435 SGD
Retailer 25$3,706 SGD
Retailer 13$4,088 SGD
Retailer 28$4,578 SGD
Retailer 10$4,778 SGD
Retailer 26$5,561 SGD
NZ Jewellers$6,654 SGD

17 data points across 30 retailers

26 retailers$2,250 SGD to $5,561 SGD

A
Cheapest Retailer
-
$2,250 SGD
A
Retailer 2
-
$2,436 SGD
View
B+
Retailer 3
-
$2,497 SGD
View
B+
Retailer 4
-
$2,512 SGD
View
B+
Retailer 5
-
$2,535 SGD
View
B+
Retailer 6
-
$2,593 SGD
View
B+
Retailer 7
-
$2,604 SGD
View
B+
Retailer 8
-
$2,661 SGD
View
Final sale: no returns
B+
Retailer 9
-
$2,716 SGD
View
Retailer 10
-
$2,884 SGD
View
Price last confirmed 46 days ago
B+
Retailer 11
-
$2,950 SGD
View
Retailer 12
-
$3,010 SGD
View
Price last confirmed 33 days ago
B+
Retailer 13
-
$3,017 SGD
View
B+
Retailer 14
-
$3,130 SGD
View
B+
Retailer 15
-
$3,151 SGD
View
B+
Retailer 16
-
$3,230 SGD
View
Retailer 17
-
$3,327 SGD
View
Price last confirmed 46 days ago
B+
Retailer 18
-
$3,332 SGD
View
B+
Retailer 19
-
$3,332 SGD
View
B+
Retailer 20
-
$3,367 SGD
View
B+
Retailer 21
-
$3,435 SGD
View
B+
Retailer 22
-
$3,706 SGD
View
Retailer 23
-
$4,088 SGD
View
B
Retailer 24
-
$4,578 SGD
View
B
Retailer 25
-
$5,561 SGD
View
Most Expensive
NZ Jewellers
c80e9326-1258-4adf-8d75-8fba039cd4d0 · Oct 3
$6,654 SGD
$5,192 USD
View
Price last confirmed 35 days ago
25 more retailers have this diamond
Prices start from $2,250 SGDSave up to $3,310 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.00ct Marquise
$2,250 SGD