CaratHunter
Plans
Round|Natural|GIA

0.43ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 6551631791

Certificate GIA 6551631791

Diamond specifications and retailer prices

From £378 GBP
$507 USD
As of October 28, 2026
Save £674 GBP (64%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,052 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 0.43ct natural round diamond

This 0.43ct natural round sits in the sub-half-carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6551631791. Listed at 14 retailers as of October 27, 2026, with prices from £378 to £1,052, a £674 spread on the same certified stone. Queensmith lists it at £1,052. 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

0.43
Carat
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6551631791
Dimensions4.86 × 4.87 × 2.96 mm
L/W Ratio1.00
Culet sizeNone
Top View
4.86 mm4.87 mm0.43 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551631791
Side View
Table 57.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.7%

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 28
Current: £1,052 GBP|Low: £284 GBP|High: £1,057 GBP|Avg: £520 GBP|+2.3%
Queensmith
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 8£284 GBP
Retailer 9£292 GBP
Retailer 15£378 GBP
Retailer 11£384 GBP
Retailer 10£387 GBP
Retailer 3£393 GBP
Retailer 16£407 GBP
Retailer 17£407 GBP
Retailer 7£436 GBP
Retailer 18£437 GBP
Retailer 6£464 GBP
Retailer 4£466 GBP
Retailer 5£507 GBP
Retailer 13£509 GBP
Retailer 14£620 GBP
Retailer 2£859 GBP
Retailer 12£964 GBP
Queensmith£1,052 GBP

34 data points across 18 retailers

14 retailers£378 GBP to £1,052 GBP

A
Cheapest Retailer
-
£378 GBP
$507 USD
A
Retailer 2
-
£384 GBP
$515 USD
View
A
Retailer 3
-
£393 GBP
$527 USD
View
A
Retailer 4
-
£396 GBP
$531 USD
View
A
Retailer 5
-
£407 GBP
$546 USD
View
A
Retailer 6
-
£407 GBP
$546 USD
View
Retailer 7
-
£437 GBP
$585 USD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
£464 GBP
$622 USD
View
B+
Retailer 9
-
£507 GBP
$679 USD
View
B+
Retailer 10
-
£509 GBP
View
B+
Retailer 11
-
£620 GBP
€791 EUR
View
B
Retailer 12
-
£859 GBP
View
B
Retailer 13
-
£964 GBP
View
Most Expensive
B
Queensmith
6551631791 · Oct 27
£1,052 GBP
View
13 more retailers have this diamond
Prices start from £378 GBPSave up to £674 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
0.43ct Round
£378 GBP