Round|Natural|GIA

0.85ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 1545677920

Certificate GIA 1545677920

Diamond specifications and retailer prices

From £754 GBP
$1,010 USD
As of October 26, 2026
Save £649 GBP (46%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,324 GBP at NZ Jewellers · As of September 26, 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 1545677920. Listed at 9 retailers as of October 26, 2026, with a 86% 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
FluorescenceFaint
Crown angle33°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1545677920
Dimensions6.10 × 6.13 × 3.74 mm
L/W Ratio1.00
Star length50%
Culet sizeNone
Key to symbols
Cloud
Top View
6.10 mm6.13 mm0.85 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1545677920
Side View
Table 55.0%Crown 33°GirdlePavilion 41°Culet: NoneDepth 61.1%

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 26
Current: £1,403 GBP|Low: £754 GBP|High: £1,410 GBP|Avg: £1,004 GBP|+3.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 4£754 GBP
Retailer 2£893 GBP
Retailer 5£1,069 GBP
Retailer 3£1,075 GBP
Retailer 1£1,403 GBP

43 data points across 5 retailers

9 retailers£754 GBP to £1,403 GBP

Retailer 1
-
£741 GBP
$993 USD
Price last confirmed 24 days ago
Retailer 2
-
£741 GBP
$993 USD
View
Price last confirmed 24 days ago
A
Retailer 3
-
£754 GBP
$1,010 USD
View
Retailer 4
-
£769 GBP
$1,031 USD
View
Price last confirmed 32 days ago
Retailer 5
-
£855 GBP
$1,146 USD
View
Price last confirmed 32 days ago
A
Retailer 6
-
£893 GBP
View
B+
Retailer 7
-
£1,075 GBP
€1,372 EUR
View
B
Retailer 8
-
£1,403 GBP
View
Most Expensive
NZ Jewellers
b8d6b326-115d-4120-948f-dc6b4a64bcb4 · Sep 26
£2,324 GBP
$3,114 USD
View
Price last confirmed 35 days ago
8 more retailers have this diamond
Prices start from £754 GBPSave up to £649 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
£754 GBP