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Marquise|Natural|GIA

3.12ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 1548415509

Certificate GIA 1548415509

Diamond specifications and retailer prices

From £29,645 GBP
$39,782 USD
As of November 2, 2026
Save £22,154 GBP (43%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £51,799 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 3.12ct natural marquise diamond

This 3.12ct natural marquise sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1548415509. Listed at 15 retailers as of November 2, 2026, with prices from £29,645 to £51,799, a £22,154 spread on the same certified stone. MOH London lists it at £51,799. 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

3.12
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1548415509
Dimensions15.67 × 7.68 × 4.57 mm
L/W Ratio2.04
Girdle conditionFaceted
Key to symbols
Twinning Wisp, Feather, Crystal, Natural
Top View
15.67 mm7.68 mm3.12 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1548415509
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 59.5%

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: Nov 2
Current: £51,799 GBP|Low: £29,645 GBP|High: £53,873 GBP|Avg: £37,068 GBP|-3.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 2, 2026
Retailer 14£29,645 GBP
Retailer 5£30,057 GBP
Retailer 13£30,402 GBP
Retailer 4£33,167 GBP
Retailer 8£33,437 GBP
Retailer 6£33,443 GBP
Retailer 11£34,548 GBP
Retailer 12£34,548 GBP
Retailer 10£35,931 GBP
Retailer 3£37,312 GBP
Retailer 7£40,230 GBP
Retailer 2£40,790 GBP
Retailer 9£42,053 GBP
MOH London£51,799 GBP

35 data points across 14 retailers

15 retailers£29,645 GBP to £51,799 GBP

A
Cheapest Retailer
-
£29,645 GBP
$39,782 USD
Retailer 2
-
£30,037 GBP
HK$314,900 HKD
View
Price last confirmed 46 days ago
A
Retailer 3
-
£30,057 GBP
$40,335 USD
View
A
Retailer 4
-
£30,402 GBP
$40,798 USD
View
Final sale: no returns
B+
Retailer 5
-
£33,167 GBP
$44,508 USD
View
B+
Retailer 6
-
£33,437 GBP
View
B+
Retailer 7
-
£33,443 GBP
$44,879 USD
View
B+
Retailer 8
-
£34,548 GBP
$46,362 USD
View
B+
Retailer 9
-
£34,548 GBP
$46,362 USD
View
B+
Retailer 10
-
£35,931 GBP
$48,217 USD
View
B+
Retailer 11
-
£37,312 GBP
$50,071 USD
View
B
Retailer 12
-
£40,230 GBP
€51,416 EUR
View
B
Retailer 13
-
£40,790 GBP
View
B+
Retailer 14
-
£42,053 GBP
View
Most Expensive
B
MOH London
AC9D95B13 · Nov 2
£51,799 GBP
View
14 more retailers have this diamond
Prices start from £29,645 GBPSave up to £22,154 GBP

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
3.12ct Marquise
£29,645 GBP