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Round|Natural|GIA

0.85ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 1242003801

Certificate GIA 1242003801

Diamond specifications and retailer prices

From £536 GBP
As of November 5, 2026
Save £543 GBP (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,080 GBP at Allurez · As of November 5, 2026
View at Allurez

About this 0.85ct natural round diamond

This 0.85ct natural round sits in the just-under-one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242003801. Listed at 13 retailers as of November 5, 2026, with prices from £536 to £1,080, a £543 spread on the same certified stone. Allurez lists it at £1,080. 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
K
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 1242003801
Dimensions6.02 × 6.06 × 3.79 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.02 mm6.06 mm0.85 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242003801
Side View
Table 58.0%Crown 34.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £1,080 GBP|Low: £536 GBP|High: £1,080 GBP|Avg: £723 GBP
Allurez
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 5£536 GBP
Retailer 10£545 GBP
Retailer 6£587 GBP
Retailer 3£593 GBP
Retailer 8£606 GBP
Retailer 2£653 GBP
Retailer 12£687 GBP
Retailer 9£778 GBP
Retailer 7£790 GBP
Retailer 11£890 GBP
Retailer 4£902 GBP
Allurez£1,080 GBP

40 data points across 12 retailers

13 retailers£536 GBP to £1,080 GBP

A
Cheapest Retailer
-
£536 GBP
A
Retailer 2
-
£545 GBP
View
A
Retailer 3
-
£587 GBP
View
A
Retailer 4
-
£593 GBP
View
A
Retailer 5
-
£606 GBP
View
A
Retailer 6
-
£653 GBP
View
A
Retailer 7
-
£687 GBP
View
B+
Retailer 8
-
£747 GBP
View
A
Retailer 9
-
£778 GBP
View
A
Retailer 10
-
£790 GBP
View
B+
Retailer 11
-
£890 GBP
View
B+
Retailer 12
-
£902 GBP
View
Most Expensive
B
Allurez
4179466 · Nov 5
£1,080 GBP
$1,454 USD
View
12 more retailers have this diamond
Prices start from £536 GBPSave up to £543 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
£536 GBP