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Marquise|Natural|GIA

0.51ct I SI2 Marquise Natural Diamond

VG • I/SI2 • GIA 7372661674

Certificate GIA 7372661674

Diamond specifications and retailer prices

From $1,376 NZD
As of November 4, 2026
Save $777 NZD (36%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,154 NZD 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 $1,376 to $2,154, a $777 spread on the same certified stone. 77 Diamonds lists it at $2,154. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $2,154 NZD|Low: $1,483 NZD|High: $2,191 NZD|Avg: $1,728 NZD|+0.7%
77 Diamonds
Retailer 2
Retailer 3
November 6, 2026
Retailer 3$1,483 NZD
Retailer 2$1,528 NZD
77 Diamonds$2,154 NZD

36 data points across 3 retailers

4 retailers$1,376 NZD to $2,154 NZD

B+
Cheapest Retailer
-
$1,376 NZD
Retailer 2
-
$1,483 NZD
View
Price last confirmed 71 days ago
B
Retailer 3
-
$1,528 NZD
View
Most Expensive
B
77 Diamonds
MQDHWCMXFVUA · Nov 6
$2,154 NZD
£940 GBP
View
3 more retailers have this diamond
Prices start from $1,376 NZDSave up to $777 NZD

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
$1,376 NZD