Round|Natural|GIA

0.80ct G SI1 Round Natural Diamond

EX • G/SI1 • GIA 1242035018

Certificate GIA 1242035018

Diamond specifications and retailer prices

From £1,052 GBP
$1,410 USD
As of October 25, 2026
Save £2,165 GBP (67%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £3,217 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1242035018. Listed at 28 retailers as of October 25, 2026, with a 206% 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
G
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1242035018
Dimensions5.89 × 5.92 × 3.70 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
5.89 mm5.92 mm0.80 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242035018
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.6%

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 25
Current: £1,965 GBP|Low: £1,052 GBP|High: £2,521 GBP|Avg: £1,641 GBP|+1.9%
Retailer 1
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
October 31, 2026
Retailer 15£1,052 GBP
Retailer 4£1,102 GBP
Retailer 7£1,108 GBP
Retailer 13£1,195 GBP
Retailer 3£1,358 GBP
Retailer 6£1,403 GBP
Retailer 2£1,446 GBP
Retailer 8£1,458 GBP
Retailer 14£1,559 GBP
Retailer 10£1,668 GBP
Retailer 5£1,721 GBP
Retailer 9£1,802 GBP
Retailer 1£1,965 GBP
Retailer 11£2,324 GBP
Retailer 12£2,512 GBP

33 data points across 15 retailers

28 retailers£1,052 GBP to £3,217 GBP

Retailer 1
-
£860 GBP
HK$9,000 HKD
Price last confirmed 50 days ago
A
Retailer 2
-
£1,052 GBP
$1,410 USD
View
A
Retailer 3
-
£1,102 GBP
$1,477 USD
View
Final sale: no returns
A
Retailer 4
-
£1,108 GBP
$1,484 USD
View
A
Retailer 5
-
£1,108 GBP
$1,485 USD
View
B+
Retailer 6
-
£1,195 GBP
$1,601 USD
View
Retailer 7
-
£1,195 GBP
$1,601 USD
View
Price last confirmed 23 days ago
Retailer 8
-
£1,195 GBP
$1,601 USD
View
Price last confirmed 9 days ago
Retailer 9
-
£1,250 GBP
$1,675 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
£1,252 GBP
$1,677 USD
View
B+
Retailer 11
-
£1,358 GBP
$1,820 USD
View
B+
Retailer 12
-
£1,358 GBP
$1,820 USD
View
Retailer 13
-
£1,379 GBP
$1,848 USD
View
Price last confirmed 22 days ago
Retailer 14
-
£1,379 GBP
$1,848 USD
View
Price last confirmed 11 days ago
B+
Retailer 15
-
£1,379 GBP
$1,848 USD
View
B+
Retailer 16
-
£1,403 GBP
$1,880 USD
View
B+
Retailer 17
-
£1,446 GBP
$1,937 USD
View
B+
Retailer 18
-
£1,458 GBP
View
B+
Retailer 19
-
£1,559 GBP
View
B+
Retailer 20
-
£1,668 GBP
View
Retailer 21
-
£1,721 GBP
A$3,549 AUD
View
Price last confirmed 26 days ago
B+
Retailer 22
-
£1,802 GBP
€2,300 EUR
View
B
Retailer 23
-
£1,965 GBP
ZAR 42,533 ZAR
View
B
Retailer 24
-
£2,324 GBP
View
B
Retailer 25
-
£2,512 GBP
View
B
Retailer 26
-
£3,217 GBP
$4,311 USD
View
Retailer 27
-
£3,217 GBP
$4,311 USD
View
Price last confirmed 35 days ago
Most Expensive
NZ Jewellers
20d64a2c-affe-42e1-86b5-83b1a58a0c54 · Oct 20
£3,217 GBP
$4,311 USD
View
Price last confirmed 11 days ago
27 more retailers have this diamond
Prices start from £1,052 GBPSave up to £2,165 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
£1,052 GBP