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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 $1,274 AUD
$893 USD
As of November 2, 2026
Save $321 AUD (20%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,595 AUD at 77 Diamonds · As of November 2, 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 November 2, 2026, with prices from $1,274 to $1,595, a $321 spread on the same certified stone. 77 Diamonds lists it at $1,595. 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: Nov 2
Current: $1,595 AUD|Low: $1,143 AUD|High: $1,688 AUD|Avg: $1,438 AUD|+6.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 2, 2026
Retailer 3$1,274 AUD
Retailer 5$1,280 AUD
Retailer 2$1,463 AUD
Retailer 4$1,563 AUD
77 Diamonds$1,595 AUD

40 data points across 5 retailers

4 retailers$1,274 AUD to $1,595 AUD

A
Cheapest Retailer
-
$1,274 AUD
$893 USD
Final sale: no returns
B+
Retailer 2
-
$1,463 AUD
$1,025 USD
View
B+
Retailer 3
-
$1,563 AUD
SGD 1,480 SGD
View
Most Expensive
B+
77 Diamonds
MQCPJGQQHD3A · Nov 2
$1,595 AUD
£880 GBP
View
3 more retailers have this diamond
Prices start from $1,274 AUDSave up to $321 AUD

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
$1,274 AUD