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Marquise|Natural|GIA

1.00ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 6552561278

Certificate GIA 6552561278

Diamond specifications and retailer prices

From $3,628 SGD
As of November 4, 2026
Save $3,851 SGD (51%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,813 SGD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6552561278. Listed at 21 retailers as of November 4, 2026, with a 106% 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle40.74°
Pavilion angle39.49°
OriginNatural
Grading LabGIA
CertificateGIA 6552561278
Dimensions9.54 × 5.15 × 3.33 mm
L/W Ratio1.85
Culet sizeNone
Top View
9.54 mm5.15 mm1.00 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6552561278
Side View
Table 58.0%Crown 40.74°Girdle: STK-VTKPavilion 39.49°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,347 SGD|Low: $3,465 SGD|High: $7,590 SGD|Avg: $4,860 SGD|-1.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9$3,628 SGD
Retailer 11$3,749 SGD
Retailer 10$3,940 SGD
Retailer 1$4,347 SGD
Retailer 3$4,611 SGD
Retailer 4$4,611 SGD
Retailer 6$4,640 SGD
Retailer 2$4,764 SGD
Retailer 12$4,808 SGD
Retailer 8$5,227 SGD
Retailer 5$5,473 SGD
Retailer 7$7,479 SGD

33 data points across 12 retailers

21 retailers$3,628 SGD to $7,479 SGD

B+
Cheapest Retailer
-
$3,628 SGD
B+
Retailer 2
-
$3,639 SGD
View
B+
Retailer 3
-
$3,749 SGD
View
Final sale: no returns
B+
Retailer 4
-
$3,940 SGD
View
B+
Retailer 5
-
$4,041 SGD
View
Retailer 6
-
$4,063 SGD
View
Price last confirmed 16 days ago
Retailer 7
-
$4,063 SGD
View
Price last confirmed 20 days ago
Retailer 8
-
$4,219 SGD
View
Price last confirmed 19 days ago
B+
Retailer 9
-
$4,347 SGD
View
B
Retailer 10
-
$4,611 SGD
View
B
Retailer 11
-
$4,611 SGD
View
B+
Retailer 12
-
$4,640 SGD
View
Retailer 13
-
$4,688 SGD
View
Price last confirmed 15 days ago
B
Retailer 14
-
$4,764 SGD
View
Retailer 15
-
$4,808 SGD
View
Price last confirmed 32 days ago
B
Retailer 16
-
$4,909 SGD
View
Retailer 17
-
$5,081 SGD
View
Price last confirmed 21 days ago
B
Retailer 18
-
$5,227 SGD
View
B
Retailer 19
-
$5,473 SGD
View
B
Retailer 20
-
$7,479 SGD
View
Most Expensive
NZ Jewellers
d4967226-1fa5-4959-a89c-9f6477009045 · Oct 21
$7,813 SGD
$6,117 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from $3,628 SGDSave up to $3,851 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.

B+
1.00ct Marquise
$3,628 SGD