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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 6545855164

Certificate GIA 6545855164

Diamond specifications and retailer prices

From $7,443 SGD
$5,820 USD
As of November 1, 2026
Save $5,940 SGD (44%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $13,384 SGD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural marquise diamond

This 1.51ct natural marquise sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545855164. Listed at 8 retailers as of October 30, 2026, with prices from $7,443 to $13,384, a $5,940 spread on the same certified stone. NZ Jewellers lists it at $13,384. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle41.63°
Pavilion angle40.51°
OriginNatural
Grading LabGIA
CertificateGIA 6545855164
Dimensions10.29 × 5.82 × 4.01 mm
L/W Ratio1.77
Girdle conditionExtremely Thick
Key to symbols
Twinning Wisp, Feather, Crystal, Cavity, Needle, Indented Natural
Top View
10.29 mm5.82 mm1.51 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545855164
Side View
Table 58.0%Crown 41.63°Girdle: Very ThickPavilion 40.51°Culet: NoneDepth 68.9%

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 1
Current: $13,384 SGD|Low: $6,363 SGD|High: $13,384 SGD|Avg: $8,128 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7$6,363 SGD
Retailer 9$7,050 SGD
Retailer 6$7,443 SGD
Retailer 3$7,699 SGD
Retailer 8$7,934 SGD
Retailer 2$8,002 SGD
Retailer 5$8,002 SGD
Retailer 10$8,274 SGD
Retailer 4$11,788 SGD
NZ Jewellers$13,384 SGD

8 data points across 10 retailers

8 retailers$7,443 SGD to $13,384 SGD

Retailer 1
-
$6,363 SGD
$4,975 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$7,443 SGD
$5,820 USD
View
B+
Retailer 3
-
$7,699 SGD
£4,740 GBP
View
Retailer 4
-
$7,934 SGD
$6,204 USD
View
Price last confirmed 11 days ago
B+
Retailer 5
-
$8,002 SGD
$6,257 USD
View
B+
Retailer 6
-
$8,002 SGD
$6,257 USD
View
B
Retailer 7
-
$11,788 SGD
£7,258 GBP
View
Most Expensive
B
NZ Jewellers
0c44c79a-0461-465a-82d3-82391f0c0c93 · Oct 30
$13,384 SGD
$10,465 USD
View
7 more retailers have this diamond
Prices start from $7,443 SGDSave up to $5,940 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+
1.51ct Marquise
$7,443 SGD