CaratHunter
Plans
Marquise|Natural|GIA

3.50ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 1569459555

Certificate GIA 1569459555

Diamond specifications and retailer prices

From £23,777 GBP
HK$248,900 HKD
As of November 1, 2026
Save £19,577 GBP (45%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £43,354 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.5ct natural marquise diamond

This 3.5ct natural marquise sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1569459555. Listed at 15 retailers as of November 1, 2026, with prices from £23,777 to £43,354, a £19,577 spread on the same certified stone. MOH London lists it at £43,354. 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

3.50
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1569459555
Dimensions14.73 × 7.99 × 4.99 mm
L/W Ratio1.84
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural
Top View
14.73 mm7.99 mm3.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1569459555
Side View
Table 62.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

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: Nov 1
Current: £43,354 GBP|Low: £23,777 GBP|High: £43,586 GBP|Avg: £30,818 GBP|-0.5%
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
Retailer 15
November 2, 2026
Retailer 6£23,777 GBP
Retailer 8£24,827 GBP
Retailer 3£27,114 GBP
Retailer 7£27,418 GBP
Retailer 2£27,971 GBP
Retailer 5£28,087 GBP
Retailer 14£28,917 GBP
Retailer 11£30,641 GBP
Retailer 12£31,918 GBP
Retailer 15£33,195 GBP
Retailer 10£33,683 GBP
Retailer 4£34,120 GBP
Retailer 9£34,143 GBP
Retailer 13£34,471 GBP
MOH London£43,354 GBP

18 data points across 15 retailers

15 retailers£23,777 GBP to £43,354 GBP

A
Cheapest Retailer
-
£23,777 GBP
HK$248,900 HKD
A
Retailer 2
-
£24,827 GBP
₹3,168,194 INR
View
B+
Retailer 3
-
£27,114 GBP
$36,330 USD
View
B+
Retailer 4
-
£27,418 GBP
$36,737 USD
View
B+
Retailer 5
-
£27,971 GBP
View
B+
Retailer 6
-
£28,087 GBP
$37,634 USD
View
Final sale: no returns
B+
Retailer 7
-
£28,917 GBP
$38,745 USD
View
B+
Retailer 8
-
£30,641 GBP
$41,056 USD
View
B+
Retailer 9
-
£31,918 GBP
$42,767 USD
View
B+
Retailer 10
-
£33,195 GBP
$44,477 USD
View
B+
Retailer 11
-
£33,683 GBP
€42,982 EUR
View
B
Retailer 12
-
£34,120 GBP
$45,717 USD
View
B+
Retailer 13
-
£34,143 GBP
View
B
Retailer 14
-
£34,471 GBP
$46,188 USD
View
Most Expensive
B
MOH London
0BBBE3383 · Nov 1
£43,354 GBP
View
14 more retailers have this diamond
Prices start from £23,777 GBPSave up to £19,577 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
3.50ct Marquise
£23,777 GBP