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Marquise|Natural|GIA

0.30ct H SI1 Marquise Natural Diamond

EX • H/SI1 • GIA 1242031130

Certificate GIA 1242031130

Diamond specifications and retailer prices

From $636 NZD
$358 USD
As of November 1, 2026
Save $724 NZD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,553 NZD at MOH London · As of November 2, 2026
View at MOH London

About this 0.3ct natural marquise diamond

This 0.3ct natural marquise sits in the sub-half-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242031130. Listed at 16 retailers as of November 1, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.30
Carat
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242031130
Dimensions7.13 × 3.40 × 2.14 mm
L/W Ratio2.10
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
7.13 mm3.40 mm0.30 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242031130
Side View
Table 59.0%CrownGirdle: VTK-VTKPavilionCulet: NoneDepth 62.8%

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 1
Current: $1,553 NZD|Low: $636 NZD|High: $1,571 NZD|Avg: $1,119 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$636 NZD
Retailer 4$876 NZD
Retailer 6$921 NZD
Retailer 5$1,042 NZD
Retailer 8$1,077 NZD
Retailer 3$1,110 NZD
Retailer 2$1,361 NZD
MOH London$1,553 NZD

37 data points across 8 retailers

16 retailers$636 NZD to $1,361 NZD

B+
Cheapest Retailer
-
$636 NZD
$358 USD
B+
Retailer 2
-
$672 NZD
$378 USD
View
B+
Retailer 3
-
$706 NZD
SGD 537 SGD
View
B+
Retailer 4
-
$723 NZD
$407 USD
View
B+
Retailer 5
-
$750 NZD
$422 USD
View
B
Retailer 6
-
$876 NZD
£388 GBP
View
B
Retailer 7
-
$905 NZD
$509 USD
View
B
Retailer 8
-
$905 NZD
$509 USD
View
B
Retailer 9
-
$921 NZD
£408 GBP
View
B
Retailer 10
-
$968 NZD
$545 USD
View
B
Retailer 11
-
$1,042 NZD
ZAR 9,475 ZAR
View
Retailer 12
-
$1,077 NZD
A$932 AUD
View
Price last confirmed 30 days ago
B
Retailer 13
-
$1,110 NZD
€595 EUR
View
B
Retailer 14
-
$1,361 NZD
£603 GBP
View
Most Expensive
MOH London
5A6AADB02 · Nov 2
$1,553 NZD
£688 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $636 NZDSave up to $724 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+
0.30ct Marquise
$636 NZD