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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 $458 SGD
$358 USD
As of November 1, 2026
Save $521 SGD (53%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $1,117 SGD at MOH London · As of November 1, 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: $1,117 SGD|Low: $458 SGD|High: $1,130 SGD|Avg: $805 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$458 SGD
Retailer 4$630 SGD
Retailer 6$663 SGD
Retailer 5$750 SGD
Retailer 8$775 SGD
Retailer 3$799 SGD
Retailer 2$979 SGD
MOH London$1,117 SGD

37 data points across 8 retailers

16 retailers$458 SGD to $979 SGD

B+
Cheapest Retailer
-
$458 SGD
$358 USD
B+
Retailer 2
-
$483 SGD
$378 USD
View
B+
Retailer 3
-
$508 SGD
View
B+
Retailer 4
-
$520 SGD
$407 USD
View
B+
Retailer 5
-
$539 SGD
$422 USD
View
B
Retailer 6
-
$630 SGD
£388 GBP
View
B
Retailer 7
-
$651 SGD
$509 USD
View
B
Retailer 8
-
$651 SGD
$509 USD
View
B
Retailer 9
-
$663 SGD
£408 GBP
View
B
Retailer 10
-
$696 SGD
$545 USD
View
B
Retailer 11
-
$750 SGD
ZAR 9,475 ZAR
View
Retailer 12
-
$775 SGD
A$932 AUD
View
Price last confirmed 29 days ago
B
Retailer 13
-
$799 SGD
€595 EUR
View
B
Retailer 14
-
$979 SGD
£603 GBP
View
Most Expensive
MOH London
5A6AADB02 · Nov 1
$1,117 SGD
£688 GBP
View
Price under review
14 more retailers have this diamond
Prices start from $458 SGDSave up to $521 SGD

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
$458 SGD