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Round|Natural|GIA

3.50ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 6565651079

Certificate GIA 6565651079

Diamond specifications and retailer prices

From £19,129 GBP
$25,631 USD
As of October 30, 2026
Save £19,691 GBP (51%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £38,820 GBP at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6565651079. Listed at 11 retailers as of October 30, 2026, with prices from £19,129 to £38,820, a £19,691 spread on the same certified stone. 77 Diamonds lists it at £38,820. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 6565651079
Dimensions9.60 × 9.65 × 6.10 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle, Natural
Top View
9.60 mm9.65 mm3.50 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6565651079
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 41°Culet: NoneDepth 63.4%

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 30
Current: £38,820 GBP|Low: £19,129 GBP|High: £44,086 GBP|Avg: £28,940 GBP
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7£19,129 GBP
Retailer 2£19,146 GBP
Retailer 6£19,767 GBP
Retailer 4£19,944 GBP
Retailer 5£20,135 GBP
Retailer 8£20,312 GBP
Retailer 10£21,041 GBP
Retailer 9£21,684 GBP
Retailer 11£25,920 GBP
Retailer 3£37,928 GBP
77 Diamonds£38,820 GBP

2 data points across 11 retailers

11 retailers£19,129 GBP to £38,820 GBP

A
Cheapest Retailer
-
£19,129 GBP
$25,631 USD
A
Retailer 2
-
£19,146 GBP
$25,653 USD
View
A
Retailer 3
-
£19,767 GBP
₹2,522,448 INR
View
A
Retailer 4
-
£19,944 GBP
A$41,112 AUD
View
A
Retailer 5
-
£20,135 GBP
$26,979 USD
View
Final sale: no returns
A
Retailer 6
-
£20,312 GBP
$27,216 USD
View
A
Retailer 7
-
£21,041 GBP
$28,192 USD
View
A
Retailer 8
-
£21,684 GBP
$29,054 USD
View
B+
Retailer 9
-
£25,920 GBP
View
B
Retailer 10
-
£37,928 GBP
$50,820 USD
View
Most Expensive
B
77 Diamonds
RBPUIFSFDRQNC85 · Oct 30
£38,820 GBP
View
10 more retailers have this diamond
Prices start from £19,129 GBPSave up to £19,691 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 Round
£19,129 GBP