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Marquise|Natural|GIA

1.51ct J SI1 Marquise Natural Diamond

VG • J/SI1 • GIA 6551072778

Certificate GIA 6551072778

Diamond specifications and retailer prices

From $7,391 SGD
$5,779 USD
As of November 2, 2026
Save $6,512 SGD (47%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $13,903 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551072778. Listed at 9 retailers as of October 30, 2026, with prices from $7,391 to $13,903, a $6,512 spread on the same certified stone. NZ Jewellers lists it at $13,903. 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

1.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle43.64°
Pavilion angle36.79°
OriginNatural
Grading LabGIA
CertificateGIA 6551072778
Dimensions10.74 × 6.04 × 3.69 mm
L/W Ratio1.78
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Needle
Top View
10.74 mm6.04 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551072778
Side View
Table 66.0%Crown 43.64°Girdle: VTK-ETKPavilion 36.79°Culet: NoneDepth 61.1%

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 2
Current: $13,903 SGD|Low: $6,586 SGD|High: $13,903 SGD|Avg: $8,134 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 10$6,586 SGD
Retailer 3$7,304 SGD
Retailer 8$7,391 SGD
Retailer 7$7,725 SGD
Retailer 4$7,997 SGD
Retailer 11$8,221 SGD
Retailer 2$8,312 SGD
Retailer 6$8,312 SGD
Retailer 9$8,635 SGD
Retailer 5$12,246 SGD
NZ Jewellers$13,903 SGD

24 data points across 11 retailers

9 retailers$7,391 SGD to $13,903 SGD

Retailer 1
-
$6,586 SGD
$5,150 USD
Price last confirmed 12 days ago
B+
Retailer 2
-
$7,391 SGD
$5,779 USD
View
B+
Retailer 3
-
$7,725 SGD
$6,040 USD
View
B
Retailer 4
-
$7,997 SGD
£4,924 GBP
View
Retailer 5
-
$8,221 SGD
$6,428 USD
View
Price last confirmed 11 days ago
B
Retailer 6
-
$8,312 SGD
$6,499 USD
View
B
Retailer 7
-
$8,312 SGD
$6,499 USD
View
B
Retailer 8
-
$12,246 SGD
£7,540 GBP
View
Most Expensive
C
NZ Jewellers
2152b405-07c6-46ab-a548-fd6aa0b275c8 · Oct 30
$13,903 SGD
$10,871 USD
View
8 more retailers have this diamond
Prices start from $7,391 SGDSave up to $6,512 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
$7,391 SGD