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Marquise|Natural|GIA

1.51ct H SI1 Marquise Natural Diamond

H/SI1 • GIA 6565358396

Certificate GIA 6565358396

Diamond specifications and retailer prices

From $9,240 SGD
As of November 2, 2026
Save $7,164 SGD (44%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $16,404 SGD at NZ Jewellers · As of November 3, 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 H colour (near-colourless) and SI1 clarity (slightly-included) and certified by GIA 6565358396. Listed at 7 retailers as of November 2, 2026, with prices from $9,240 to $16,404, a $7,164 spread on the same certified stone. NZ Jewellers lists it at $16,404. 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
H
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle40°
Pavilion angle37.72°
OriginNatural
Grading LabGIA
CertificateGIA 6565358396
Dimensions10.92 × 5.97 × 3.71 mm
L/W Ratio1.83
Girdle conditionExtremely Thick
Key to symbols
Crystal, Feather, Cavity, Needle, Natural
Top View
10.92 mm5.97 mm1.51 ctH / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6565358396
Side View
Table 56.0%Crown 40°GirdlePavilion 37.72°CuletDepth 62.1%

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: $16,404 SGD|Low: $8,958 SGD|High: $17,393 SGD|Avg: $11,738 SGD|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$9,240 SGD
Retailer 4$9,368 SGD
Retailer 7$9,747 SGD
Retailer 6$9,808 SGD
Retailer 5$9,959 SGD
Retailer 3$13,668 SGD
NZ Jewellers$16,404 SGD

37 data points across 7 retailers

7 retailers$9,240 SGD to $16,404 SGD

B+
Cheapest Retailer
-
$9,240 SGD
B+
Retailer 2
-
$9,368 SGD
View
Retailer 3
-
$9,747 SGD
View
Price last confirmed 16 days ago
B+
Retailer 4
-
$9,808 SGD
View
B+
Retailer 5
-
$9,959 SGD
View
B
Retailer 6
-
$13,668 SGD
View
Most Expensive
C
NZ Jewellers
2ad8eb61-efa7-48b6-8ea3-d62b9172fbfc · Nov 3
$16,404 SGD
$12,800 USD
View
6 more retailers have this diamond
Prices start from $9,240 SGDSave up to $7,164 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
$9,240 SGD