Round|Natural|GIA

0.85ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 3485765063

Certificate GIA 3485765063

Diamond specifications and retailer prices

From £836 GBP
$1,120 USD
As of October 31, 2026
Save £1,602 GBP (66%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £2,438 GBP at NZ Jewellers · As of October 3, 2026
View at NZ Jewellers

About this 0.85ct natural round diamond

This 0.85ct natural round sits in the just-under-one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 3485765063. Listed at 26 retailers as of October 30, 2026, with a 192% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.85
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 3485765063
Dimensions6.07 × 6.02 × 3.77 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
6.07 mm6.02 mm0.85 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3485765063
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.5%

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: Oct 31
Current: £1,126 GBP|Low: £766 GBP|High: £1,853 GBP|Avg: £1,171 GBP|+4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 6£836 GBP
Retailer 4£905 GBP
Retailer 7£974 GBP
Retailer 1£1,126 GBP
Retailer 5£1,223 GBP
Retailer 2£1,398 GBP
Retailer 3£1,841 GBP

39 data points across 7 retailers

26 retailers£836 GBP to £2,438 GBP

A
Cheapest Retailer
-
£836 GBP
$1,120 USD
Final sale: no returns
A
Retailer 2
-
£867 GBP
$1,162 USD
View
A
Retailer 3
-
£889 GBP
$1,191 USD
View
A
Retailer 4
-
£905 GBP
$1,213 USD
View
Retailer 5
-
£905 GBP
$1,213 USD
View
Price last confirmed 44 days ago
Retailer 6
-
£905 GBP
$1,213 USD
View
Price last confirmed 23 days ago
Retailer 7
-
£905 GBP
$1,213 USD
View
Price last confirmed 10 days ago
Retailer 8
-
£905 GBP
$1,213 USD
View
Price last confirmed 16 days ago
Retailer 9
-
£940 GBP
$1,260 USD
View
Price last confirmed 32 days ago
A
Retailer 10
-
£972 GBP
$1,303 USD
View
A
Retailer 11
-
£974 GBP
$1,305 USD
View
B+
Retailer 12
-
£1,045 GBP
$1,400 USD
View
B+
Retailer 13
-
£1,045 GBP
$1,400 USD
View
Retailer 14
-
£1,045 GBP
$1,400 USD
View
Price last confirmed 40 days ago
Retailer 15
-
£1,045 GBP
$1,400 USD
View
Price last confirmed 23 days ago
Retailer 16
-
£1,045 GBP
$1,400 USD
View
Price last confirmed 11 days ago
B+
Retailer 17
-
£1,045 GBP
$1,400 USD
View
B+
Retailer 18
-
£1,082 GBP
$1,450 USD
View
B+
Retailer 19
-
£1,126 GBP
View
B+
Retailer 20
-
£1,223 GBP
View
B+
Retailer 21
-
£1,398 GBP
€1,784 EUR
View
B
Retailer 22
-
£1,841 GBP
View
B
Retailer 23
-
£2,438 GBP
$3,267 USD
View
Retailer 24
-
£2,438 GBP
$3,267 USD
View
Price last confirmed 42 days ago
Retailer 25
-
£2,438 GBP
$3,267 USD
View
Price last confirmed 11 days ago
Most Expensive
NZ Jewellers
191a5c4c-5cda-4f82-b0c2-a0f7a7d44e12 · Oct 3
£2,438 GBP
$3,267 USD
View
Price last confirmed 29 days ago
25 more retailers have this diamond
Prices start from £836 GBPSave up to £1,602 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
0.85ct Round
£836 GBP