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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 2564717598

Certificate GIA 2564717598

Diamond specifications and retailer prices

From $921 SGD
As of October 31, 2026
Save $556 SGD (38%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $1,477 SGD at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded H 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 2564717598. Listed at 9 retailers as of October 31, 2026, with prices from $921 to $1,477, a $556 spread on the same certified stone. Frank Darling lists it at $1,477. 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

0.51
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564717598
Dimensions7.86 × 4.16 × 2.60 mm
L/W Ratio1.89
Culet sizeNone
Top View
7.86 mm4.16 mm0.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2564717598
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.7%

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: Oct 31
Current: $1,477 SGD|Low: $921 SGD|High: $1,477 SGD|Avg: $1,156 SGD
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$921 SGD
Retailer 5$943 SGD
Retailer 6$964 SGD
Retailer 7$990 SGD
Retailer 4$1,225 SGD
Retailer 2$1,269 SGD
Retailer 8$1,317 SGD
Retailer 3$1,381 SGD
Frank Darling$1,477 SGD

7 data points across 9 retailers

9 retailers$921 SGD to $1,477 SGD

B+
Cheapest Retailer
-
$921 SGD
B+
Retailer 2
-
$943 SGD
View
B+
Retailer 3
-
$964 SGD
$754 USD
View
B+
Retailer 4
-
$990 SGD
$774 USD
View
B
Retailer 5
-
$1,225 SGD
$958 USD
View
B
Retailer 6
-
$1,269 SGD
€945 EUR
View
B
Retailer 7
-
$1,317 SGD
$1,030 USD
View
B
Retailer 8
-
$1,381 SGD
$1,080 USD
View
Most Expensive
B
Frank Darling
2709605HK · Nov 2
$1,477 SGD
$1,155 USD
View
8 more retailers have this diamond
Prices start from $921 SGDSave up to $556 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+
0.51ct Marquise
$921 SGD