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Round|Natural|GIA

3.50ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 1445704291

Certificate GIA 1445704291

Diamond specifications and retailer prices

From £22,880 GBP
$30,703 USD
As of October 31, 2026
Save £7,971 GBP (26%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £30,850 GBP at Yorxs · As of November 1, 2026
View at Yorxs

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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1445704291. Listed at 10 retailers as of October 31, 2026, with prices from £22,880 to £30,850, a £7,971 spread on the same certified stone. Yorxs lists it at £30,850. 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
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.5°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1445704291
Dimensions9.60 × 9.67 × 6.07 mm
L/W Ratio1.01
Star length45%
Lower girdle80%
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
9.60 mm9.67 mm3.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1445704291
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.8°Culet: NoneDepth 63.0%

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: Oct 31
Current: £28,304 GBP|Low: £22,641 GBP|High: £31,069 GBP|Avg: £27,402 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Yorxs
November 1, 2026
Retailer 6£22,880 GBP
Retailer 8£25,608 GBP
Retailer 5£25,752 GBP
Retailer 10£26,383 GBP
Retailer 9£27,482 GBP
Retailer 4£27,520 GBP
Retailer 12£27,520 GBP
Retailer 11£28,211 GBP
Retailer 1£28,304 GBP
Retailer 3£28,436 GBP
Retailer 7£28,581 GBP
Retailer 2£29,680 GBP
Yorxs£30,850 GBP

38 data points across 13 retailers

10 retailers£22,880 GBP to £30,850 GBP

B+
Cheapest Retailer
-
£22,880 GBP
$30,703 USD
B+
Retailer 2
-
£24,068 GBP
$32,298 USD
View
B
Retailer 3
-
£24,518 GBP
$32,901 USD
View
B
Retailer 4
-
£24,886 GBP
CA$46,382 CAD
View
B
Retailer 5
-
£25,752 GBP
$34,558 USD
View
Final sale: no returns
B
Retailer 6
-
£26,178 GBP
$35,129 USD
View
B
Retailer 7
-
£28,304 GBP
View
B
Retailer 8
-
£29,583 GBP
$39,698 USD
View
B
Retailer 9
-
£29,796 GBP
$39,984 USD
View
Most Expensive
B
Yorxs
59007 · Nov 1
£30,850 GBP
€39,428 EUR
View
9 more retailers have this diamond
Prices start from £22,880 GBPSave up to £7,971 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.

B+
3.50ct Round
£22,880 GBP