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Marquise|Natural|GIA

0.64ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 6545688659

Certificate GIA 6545688659

Diamond specifications and retailer prices

From $1,142 SGD
$893 USD
As of October 31, 2026
Save $299 SGD (21%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,441 SGD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.64ct natural marquise diamond

This 0.64ct natural marquise sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545688659. Listed at 4 retailers as of October 31, 2026, with prices from $1,142 to $1,441, a $299 spread on the same certified stone. 77 Diamonds lists it at $1,441. 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

0.64
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6545688659
Dimensions8.43 × 4.56 × 2.90 mm
L/W Ratio1.85
Top View
8.43 mm4.56 mm0.64 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6545688659
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $1,441 SGD|Low: $1,024 SGD|High: $1,513 SGD|Avg: $1,288 SGD|+7.0%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3$1,142 SGD
Retailer 5$1,146 SGD
Retailer 2$1,310 SGD
Retailer 4$1,400 SGD
77 Diamonds$1,441 SGD

39 data points across 5 retailers

4 retailers$1,142 SGD to $1,441 SGD

A
Cheapest Retailer
-
$1,142 SGD
$893 USD
Final sale: no returns
B+
Retailer 2
-
$1,310 SGD
$1,025 USD
View
B+
Retailer 3
-
$1,400 SGD
View
Most Expensive
B+
77 Diamonds
MQCPJGQQHD3A · Nov 1
$1,441 SGD
£888 GBP
View
3 more retailers have this diamond
Prices start from $1,142 SGDSave up to $299 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.

A
0.64ct Marquise
$1,142 SGD