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Round|Natural|GIA

0.80ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1555455999

Certificate GIA 1555455999

Diamond specifications and retailer prices

From £1,126 GBP
As of November 1, 2026
Save £2,317 GBP (67%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: £3,442 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.8ct natural round diamond

This 0.8ct natural round sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1555455999. Listed at 25 retailers as of November 1, 2026, with prices from £1,126 to £3,442, a £2,317 spread on the same certified stone. NZ Jewellers lists it at £3,442. 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

0.80
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1555455999
Dimensions5.90 × 5.95 × 3.70 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Culet sizeNone
Key to symbols
Crystal
Top View
5.90 mm5.95 mm0.80 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555455999
Side View
Table 57.0%Crown 35°Girdle: THN-STKPavilion 41°Culet: NoneDepth 62.5%

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 1
Current: £3,442 GBP|Low: £1,082 GBP|High: £3,442 GBP|Avg: £1,712 GBP
NZ Jewellers
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
November 6, 2026
Retailer 10£1,126 GBP
Retailer 12£1,165 GBP
Retailer 11£1,180 GBP
Retailer 6£1,279 GBP
Retailer 8£1,279 GBP
Retailer 14£1,330 GBP
Retailer 7£1,337 GBP
Retailer 21£1,361 GBP
Retailer 13£1,441 GBP
Retailer 20£1,441 GBP
Retailer 9£1,476 GBP
Retailer 16£1,493 GBP
Retailer 17£1,514 GBP
Retailer 2£1,546 GBP
Retailer 18£1,665 GBP
Retailer 15£1,769 GBP
Retailer 19£1,912 GBP
Retailer 4£2,102 GBP
Retailer 3£2,472 GBP
Retailer 5£2,580 GBP
NZ Jewellers£3,442 GBP

29 data points across 21 retailers

25 retailers£1,126 GBP to £3,442 GBP

A
Cheapest Retailer
-
£1,126 GBP
A
Retailer 2
-
£1,165 GBP
View
A
Retailer 3
-
£1,180 GBP
View
Final sale: no returns
A
Retailer 4
-
£1,279 GBP
View
Retailer 5
-
£1,279 GBP
View
Price last confirmed 8 days ago
A
Retailer 6
-
£1,286 GBP
View
A
Retailer 7
-
£1,330 GBP
View
A
Retailer 8
-
£1,331 GBP
View
A
Retailer 9
-
£1,337 GBP
View
B+
Retailer 10
-
£1,361 GBP
View
B+
Retailer 11
-
£1,441 GBP
View
B+
Retailer 12
-
£1,441 GBP
View
B+
Retailer 13
-
£1,476 GBP
View
B+
Retailer 14
-
£1,493 GBP
View
B+
Retailer 15
-
£1,514 GBP
View
B+
Retailer 16
-
£1,546 GBP
View
B+
Retailer 17
-
£1,665 GBP
View
B+
Retailer 18
-
£1,681 GBP
View
B+
Retailer 19
-
£1,769 GBP
View
Retailer 20
-
£1,841 GBP
View
Price last confirmed 32 days ago
B+
Retailer 21
-
£1,912 GBP
View
B+
Retailer 22
-
£2,102 GBP
View
B
Retailer 23
-
£2,472 GBP
View
Retailer 24
-
£2,580 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
NZ Jewellers
b6d2e8fe-030a-47c9-9295-07942ee8031c · Nov 5
£3,442 GBP
$4,633 USD
View
24 more retailers have this diamond
Prices start from £1,126 GBPSave up to £2,317 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
0.80ct Round
£1,126 GBP