Marquise|Natural|GIA

0.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 7372661674

Certificate GIA 7372661674

Diamond specifications and retailer prices

From $763 USD
As of November 4, 2026
Save $431 USD (36%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,194 USD at 77 Diamonds · As of November 6, 2026
View at 77 Diamonds

About this 0.51ct natural marquise diamond

This 0.51ct natural marquise sits in the half to three-quarter carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 7372661674. Listed at 4 retailers as of November 4, 2026, with prices from $763 to $1,194, a $431 spread on the same certified stone. 77 Diamonds lists it at $1,194. 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

0.51
Carat
I
Color
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7372661674
Dimensions8.56 × 3.99 × 2.55 mm
L/W Ratio2.15
Top View
8.56 mm3.99 mm0.51 ctI / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 7372661674
Side View
Table 57.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 63.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $1,194 USD|Low: $822 USD|High: $1,214 USD|Avg: $958 USD|+0.7%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$822 USD
Retailer 2$847 USD
77 Diamonds$1,194 USD

36 data points across 3 retailers

4 retailers$763 USD to $1,194 USD

B+
Cheapest Retailer
-
$763 USD
Retailer 2
-
$822 USD
View
Price last confirmed 71 days ago
B
Retailer 3
-
$847 USD
View
Most Expensive
B
77 Diamonds
MQDHWCMXFVUA · Nov 6
$1,194 USD
£940 GBP
View
3 more retailers have this diamond
Prices start from $763 USDSave up to $431 USD

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
$763 USD