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Marquise|Natural|GIA

0.51ct H SI1 Marquise Natural Diamond

VG • H/SI1 • GIA 1563140120

Certificate GIA 1563140120

Diamond specifications and retailer prices

From $810 NZD
SGD 616 SGD
As of October 31, 2026
Save $824 NZD (50%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,634 NZD 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1563140120. Listed at 10 retailers as of October 31, 2026, with prices from $810 to $1,634, a $824 spread on the same certified stone. Frank Darling lists it at $1,634. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563140120
Dimensions8.32 × 4.12 × 2.41 mm
L/W Ratio2.02
Culet sizeNone
Top View
8.32 mm4.12 mm0.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1563140120
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.4%

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: $1,634 NZD|Low: $810 NZD|High: $1,677 NZD|Avg: $1,191 NZD|-2.6%
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 8$810 NZD
Retailer 9$871 NZD
Retailer 3$898 NZD
Retailer 7$1,024 NZD
Retailer 6$1,133 NZD
Retailer 5$1,219 NZD
Retailer 2$1,247 NZD
Retailer 4$1,278 NZD
Retailer 10$1,318 NZD
Frank Darling$1,634 NZD

38 data points across 10 retailers

10 retailers$810 NZD to $1,634 NZD

A
Cheapest Retailer
-
$810 NZD
SGD 616 SGD
A
Retailer 2
-
$871 NZD
SGD 662 SGD
View
A
Retailer 3
-
$898 NZD
$505 USD
View
A
Retailer 4
-
$1,024 NZD
£454 GBP
View
B+
Retailer 5
-
$1,133 NZD
$638 USD
View
B+
Retailer 6
-
$1,219 NZD
$686 USD
View
B+
Retailer 7
-
$1,247 NZD
€668 EUR
View
B+
Retailer 8
-
$1,278 NZD
$719 USD
View
Retailer 9
-
$1,318 NZD
$742 USD
View
Price last confirmed 7 days ago
Most Expensive
B
Frank Darling
2679945HK · Nov 2
$1,634 NZD
$919 USD
View
9 more retailers have this diamond
Prices start from $810 NZDSave up to $824 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.

A
0.51ct Marquise
$810 NZD