Round|Natural|GIA

0.80ct H SI1 Round Natural Diamond

EX • H/SI1 • GIA 2556718136

Certificate GIA 2556718136

Diamond specifications and retailer prices

From £928 GBP
$1,243 USD
As of October 31, 2026
Save £1,779 GBP (66%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £2,707 GBP at NZ Jewellers · As of October 20, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556718136. Listed at 27 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

0.80
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556718136
Dimensions5.97 × 5.95 × 3.68 mm
L/W Ratio1.00
Culet sizeNone
Top View
5.97 mm5.95 mm0.80 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556718136
Side View
Table 59.0%Crown 34°Girdle: THN-STKPavilion 41.6°Culet: NoneDepth 61.8%

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: £2,707 GBP|Low: £851 GBP|High: £2,707 GBP|Avg: £1,402 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
November 1, 2026
Retailer 7£928 GBP
Retailer 8£931 GBP
Retailer 5£937 GBP
Retailer 16£1,005 GBP
Retailer 18£1,005 GBP
Retailer 17£1,052 GBP
Retailer 9£1,086 GBP
Retailer 3£1,161 GBP
Retailer 6£1,217 GBP
Retailer 13£1,231 GBP
Retailer 4£1,327 GBP
Retailer 2£1,399 GBP
Retailer 10£1,448 GBP
Retailer 11£1,539 GBP
Retailer 15£1,638 GBP
Retailer 12£1,945 GBP
Retailer 14£2,341 GBP
NZ Jewellers£2,707 GBP

30 data points across 18 retailers

27 retailers£928 GBP to £2,707 GBP

A
Cheapest Retailer
-
£928 GBP
$1,243 USD
Final sale: no returns
A
Retailer 2
-
£931 GBP
$1,248 USD
View
A
Retailer 3
-
£937 GBP
$1,255 USD
View
A
Retailer 4
-
£1,005 GBP
$1,347 USD
View
A
Retailer 5
-
£1,005 GBP
$1,347 USD
View
B+
Retailer 6
-
£1,052 GBP
$1,409 USD
View
B+
Retailer 7
-
£1,053 GBP
$1,411 USD
View
B+
Retailer 8
-
£1,069 GBP
$1,432 USD
View
B+
Retailer 9
-
£1,082 GBP
$1,450 USD
View
B+
Retailer 10
-
£1,086 GBP
$1,455 USD
View
B+
Retailer 11
-
£1,157 GBP
$1,550 USD
View
B+
Retailer 12
-
£1,157 GBP
$1,550 USD
View
B+
Retailer 13
-
£1,161 GBP
$1,555 USD
View
Retailer 14
-
£1,161 GBP
$1,555 USD
View
Price last confirmed 11 days ago
B+
Retailer 15
-
£1,194 GBP
$1,600 USD
View
B+
Retailer 16
-
£1,217 GBP
$1,630 USD
View
B+
Retailer 17
-
£1,231 GBP
View
B+
Retailer 18
-
£1,327 GBP
View
B
Retailer 19
-
£1,378 GBP
$1,847 USD
View
B+
Retailer 20
-
£1,399 GBP
View
Retailer 21
-
£1,448 GBP
A$2,986 AUD
View
Price last confirmed 26 days ago
B+
Retailer 22
-
£1,539 GBP
€1,964 EUR
View
B
Retailer 23
-
£1,638 GBP
ZAR 35,449 ZAR
View
B
Retailer 24
-
£1,945 GBP
View
B
Retailer 25
-
£2,341 GBP
View
B
Retailer 26
-
£2,707 GBP
$3,627 USD
View
Most Expensive
NZ Jewellers
79ec246e-9ab2-4b6a-9b13-5dd2c3e82748 · Oct 20
£2,707 GBP
$3,627 USD
View
Price last confirmed 12 days ago
26 more retailers have this diamond
Prices start from £928 GBPSave up to £1,779 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
£928 GBP