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Round|Natural|GIA

3.50ct J SI2 Round Natural Diamond

EX • J/SI2 • GIA 1242067718

Certificate GIA 1242067718

Diamond specifications and retailer prices

From £18,352 GBP
$24,590 USD
As of October 30, 2026
Save £22,676 GBP (55%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £41,028 GBP at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.5ct natural round diamond

This 3.5ct natural round sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242067718. Listed at 22 retailers as of October 30, 2026, with prices from £18,352 to £41,028, a £22,676 spread on the same certified stone. The Diamond Guys lists it at £41,028. 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
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle33°
Pavilion angle41.2°
OriginNatural
Grading LabGIA
CertificateGIA 1242067718
Dimensions9.80 × 9.85 × 5.88 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Feather, Cavity, Cloud
Top View
9.80 mm9.85 mm3.50 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1242067718
Side View
Table 62.0%Crown 33°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 59.9%

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: £22,677 GBP|Low: £18,352 GBP|High: £41,028 GBP|Avg: £25,398 GBP
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
The Diamond Guys
October 31, 2026
Retailer 20£18,352 GBP
Retailer 12£18,363 GBP
Retailer 18£18,932 GBP
Retailer 15£19,128 GBP
Retailer 16£19,317 GBP
Retailer 2£19,482 GBP
Retailer 4£20,233 GBP
Retailer 3£20,764 GBP
Retailer 21£20,997 GBP
Retailer 19£21,849 GBP
Retailer 1£22,677 GBP
Retailer 17£24,458 GBP
Retailer 14£24,722 GBP
Retailer 5£27,273 GBP
Retailer 6£33,971 GBP
Retailer 8£34,768 GBP
Retailer 10£35,527 GBP
Retailer 9£35,572 GBP
Retailer 7£35,589 GBP
Retailer 11£37,054 GBP
Retailer 13£38,536 GBP
The Diamond Guys£41,028 GBP

15 data points across 22 retailers

22 retailers£18,352 GBP to £41,028 GBP

B+
Cheapest Retailer
-
£18,352 GBP
$24,590 USD
A
Retailer 2
-
£18,363 GBP
$24,605 USD
View
A
Retailer 3
-
£18,932 GBP
₹2,415,888 INR
View
B+
Retailer 4
-
£19,128 GBP
A$39,430 AUD
View
B+
Retailer 5
-
£19,317 GBP
$25,883 USD
View
Final sale: no returns
B+
Retailer 6
-
£19,482 GBP
$26,104 USD
View
B+
Retailer 7
-
£20,233 GBP
$27,110 USD
View
B+
Retailer 8
-
£20,764 GBP
$27,822 USD
View
B+
Retailer 9
-
£20,997 GBP
$28,134 USD
View
B+
Retailer 10
-
£21,849 GBP
$29,275 USD
View
B
Retailer 11
-
£22,677 GBP
$30,385 USD
View
B
Retailer 12
-
£24,458 GBP
€31,210 EUR
View
Retailer 13
-
£24,722 GBP
View
Price last confirmed 12 days ago
B
Retailer 14
-
£27,273 GBP
View
B
Retailer 15
-
£33,971 GBP
CA$63,218 CAD
View
B
Retailer 16
-
£34,768 GBP
$46,585 USD
View
B
Retailer 17
-
£35,527 GBP
$47,602 USD
View
B
Retailer 18
-
£35,572 GBP
$47,662 USD
View
B
Retailer 19
-
£35,589 GBP
View
C
Retailer 20
-
£37,054 GBP
$49,648 USD
View
C
Retailer 21
-
£38,536 GBP
$51,634 USD
View
Most Expensive
C
The Diamond Guys
1997306237 · Oct 30
£41,028 GBP
$54,973 USD
View
21 more retailers have this diamond
Prices start from £18,352 GBPSave up to £22,676 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
£18,352 GBP