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Marquise|Natural|GIA

1.00ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 3545703504

Certificate GIA 3545703504

Diamond specifications and retailer prices

From $2,605 SGD
As of November 6, 2026
Save $3,642 SGD (58%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $7,710 SGD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1ct natural marquise diamond

This 1ct natural marquise sits in the classic one-carat band, graded J 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 3545703504. Listed at 23 retailers as of November 4, 2026, with a 140% 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
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.8°
Pavilion angle40.28°
OriginNatural
Grading LabGIA
CertificateGIA 3545703504
Dimensions9.97 × 5.18 × 3.34 mm
L/W Ratio1.92
Top View
9.97 mm5.18 mm1.00 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3545703504
Side View
Table 57.0%Crown 40.8°Girdle: ThickPavilion 40.28°Culet: NoneDepth 64.5%

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 6
Current: $3,761 SGD|Low: $2,661 SGD|High: $6,264 SGD|Avg: $3,760 SGD|-2.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 6, 2026
Retailer 8$2,661 SGD
Retailer 17$2,730 SGD
Retailer 2$2,926 SGD
Retailer 18$2,990 SGD
Retailer 16$3,210 SGD
Retailer 10$3,213 SGD
Retailer 6$3,341 SGD
Retailer 11$3,519 SGD
Retailer 13$3,700 SGD
Retailer 19$3,717 SGD
Retailer 20$3,717 SGD
Retailer 1$3,761 SGD
Retailer 4$3,832 SGD
Retailer 9$4,061 SGD
Retailer 3$4,078 SGD
Retailer 5$4,132 SGD
Retailer 15$4,169 SGD
Retailer 7$4,283 SGD
Retailer 12$4,364 SGD
Retailer 14$6,248 SGD

26 data points across 20 retailers

23 retailers$2,605 SGD to $6,248 SGD

B+
Cheapest Retailer
-
$2,605 SGD
B+
Retailer 2
-
$2,730 SGD
View
B+
Retailer 3
-
$2,926 SGD
View
B+
Retailer 4
-
$2,990 SGD
View
Final sale: no returns
B
Retailer 5
-
$3,210 SGD
View
Retailer 6
-
$3,341 SGD
View
Price last confirmed 46 days ago
Retailer 7
-
$3,341 SGD
View
Price last confirmed 26 days ago
Retailer 8
-
$3,341 SGD
View
Price last confirmed 30 days ago
Retailer 9
-
$3,469 SGD
View
Price last confirmed 37 days ago
B
Retailer 10
-
$3,717 SGD
View
B
Retailer 11
-
$3,717 SGD
View
B
Retailer 12
-
$3,761 SGD
View
B
Retailer 13
-
$3,832 SGD
View
Retailer 14
-
$3,855 SGD
View
Price last confirmed 46 days ago
Retailer 15
-
$3,855 SGD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$4,078 SGD
View
Retailer 17
-
$4,132 SGD
View
Price last confirmed 31 days ago
B
Retailer 18
-
$4,169 SGD
View
Retailer 19
-
$4,283 SGD
View
Price last confirmed 27 days ago
B
Retailer 20
-
$4,364 SGD
View
B
Retailer 21
-
$6,248 SGD
View
Retailer 22
-
$7,710 SGD
View
Price last confirmed 48 days ago
Most Expensive
NZ Jewellers
b4ffd24d-39e2-4e52-a441-4501157ae2a7 · Sep 30
$7,710 SGD
$6,016 USD
View
Price last confirmed 37 days ago
22 more retailers have this diamond
Prices start from $2,605 SGDSave up to $3,642 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
$2,605 SGD