CaratHunter
Plans
Round|Lab Grown|GIA

0.50ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • GIA 5136751323

Certificate GIA 5136751323

Diamond specifications and retailer prices

From £345 GBP
$462 USD
As of October 31, 2026
Save £291 GBP (46%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £636 GBP at Moon Ocean · As of November 1, 2026
View at Moon Ocean

About this 0.5ct lab-grown round diamond

This 0.5ct lab-grown round sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5136751323. Listed at 4 retailers as of October 31, 2026, with prices from £345 to £636, a £291 spread on the same certified stone. Moon Ocean lists it at £636. 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

0.50
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 5136751323
Dimensions5.07 × 5.10 × 3.16 mm
L/W Ratio1.01
Top View
5.07 mm5.10 mm0.50 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5136751323
Side View
Table 54.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 62.2%

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: £636 GBP|Low: £345 GBP|High: £720 GBP|Avg: £566 GBP
Moon Ocean
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 1, 2026
Retailer 3£345 GBP
Retailer 4£367 GBP
Retailer 2£603 GBP
Retailer 5£612 GBP
Moon Ocean£636 GBP
Retailer 7£716 GBP
Retailer 6£720 GBP

2 data points across 7 retailers

4 retailers£345 GBP to £636 GBP

A
Cheapest Retailer
-
£345 GBP
$462 USD
Final sale: no returns
B+
Retailer 2
-
£367 GBP
₹46,827 INR
View
B
Retailer 3
-
£603 GBP
View
Most Expensive
B
Moon Ocean
NVN-756BA8E54-323 · Nov 1
£636 GBP
View
3 more retailers have this diamond
Prices start from £345 GBPSave up to £291 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
0.50ct Round
£345 GBP