Round|Natural|GIA

0.68ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6425039374

Certificate GIA 6425039374

Diamond specifications and retailer prices

From £420 GBP
HK$4,400 HKD
As of October 30, 2026
Save £1,138 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £1,744 GBP at NZ Jewellers · As of September 1, 2026
View at NZ Jewellers

About this 0.68ct natural round diamond

This 0.68ct natural round sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6425039374. Listed at 18 retailers as of October 30, 2026, with a 271% 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

0.68
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6425039374
Dimensions5.67 × 5.72 × 3.41 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
5.67 mm5.72 mm0.68 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6425039374
Side View
Table 60.0%Crown 33°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 59.9%

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 30
Current: £1,558 GBP|Low: £420 GBP|High: £1,713 GBP|Avg: £662 GBP|-9.0%
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
October 31, 2026
Retailer 6£420 GBP
Retailer 14£458 GBP
Retailer 5£470 GBP
Retailer 9£497 GBP
Retailer 12£497 GBP
Retailer 4£516 GBP
Retailer 10£516 GBP
Retailer 3£573 GBP
Retailer 13£592 GBP
Retailer 11£596 GBP
Retailer 2£610 GBP
Retailer 7£710 GBP
Retailer 8£1,154 GBP
NZ Jewellers£1,558 GBP

32 data points across 14 retailers

18 retailers£420 GBP to £1,558 GBP

A
Cheapest Retailer
-
£420 GBP
HK$4,400 HKD
A
Retailer 2
-
£458 GBP
$614 USD
View
Final sale: no returns
A
Retailer 3
-
£470 GBP
$630 USD
View
A
Retailer 4
-
£497 GBP
$666 USD
View
A
Retailer 5
-
£497 GBP
$666 USD
View
A
Retailer 6
-
£516 GBP
SGD 935 SGD
View
A
Retailer 7
-
£516 GBP
$692 USD
View
Retailer 8
-
£556 GBP
$745 USD
View
Price last confirmed 60 days ago
A
Retailer 9
-
£573 GBP
$768 USD
View
A
Retailer 10
-
£592 GBP
View
A
Retailer 11
-
£596 GBP
$798 USD
View
A
Retailer 12
-
£610 GBP
View
Retailer 13
-
£643 GBP
$862 USD
View
Price last confirmed 62 days ago
A
Retailer 14
-
£710 GBP
€906 EUR
View
B
Retailer 15
-
£1,154 GBP
View
B
Retailer 16
-
£1,407 GBP
View
B
Retailer 17
-
£1,558 GBP
$2,088 USD
View
Most Expensive
NZ Jewellers
58903925-c4c9-4135-a1b2-a82bcf431f63 · Sep 1
£1,744 GBP
$2,337 USD
View
Price last confirmed 60 days ago
17 more retailers have this diamond
Prices start from £420 GBPSave up to £1,138 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
0.68ct Round
£420 GBP