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Round|Lab Grown|IGI

1.29ct D VVS1 Round Lab Grown Diamond

ID • D/VVS1 • IGI LG839676122

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839676122

Diamond specifications and retailer prices

From £173 GBP
$231 USD
As of October 29, 2026
Save £604 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £796 GBP at Brilliant Earth · As of October 16, 2026
View at Brilliant Earth

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG839676122 or 839676122. Listed at 13 retailers as of October 29, 2026, with a 348% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
D
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839676122
Dimensions6.92 × 6.98 × 4.31 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.92 mm6.98 mm1.29 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839676122
Side View
Table 58.0%Crown 36°Girdle: MediumPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A+
Exceptional
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 29
Current: £354 GBP|Low: £168 GBP|High: £896 GBP|Avg: £419 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 29, 2026
Retailer 6£173 GBP
Retailer 5£221 GBP
Retailer 11£252 GBP
Retailer 8£308 GBP
Retailer 7£316 GBP
Retailer 12£320 GBP
Retailer 1£354 GBP
Retailer 2£458 GBP
Retailer 3£604 GBP
Retailer 4£612 GBP
Retailer 10£628 GBP
Retailer 9£777 GBP

25 data points across 12 retailers

13 retailers£173 GBP to £777 GBP

A+
Cheapest Retailer
-
£173 GBP
$231 USD
Final sale: no returns
A
Retailer 2
-
£221 GBP
HK$2,300 HKD
View
B+
Retailer 3
-
£252 GBP
$335 USD
View
A
Retailer 4
-
£308 GBP
View
A
Retailer 5
-
£316 GBP
€401 EUR
View
A
Retailer 6
-
£320 GBP
ZAR 6,893 ZAR
View
A
Retailer 7
-
£354 GBP
View
B+
Retailer 8
-
£458 GBP
A$939 AUD
View
B
Retailer 9
-
£604 GBP
$805 USD
View
B+
Retailer 10
-
£612 GBP
$815 USD
View
Price last confirmed 12 days ago
B+
Retailer 11
-
£628 GBP
SGD 1,131 SGD
View
B
Retailer 12
-
£777 GBP
View
Most Expensive
B
Brilliant Earth
21696756A · Oct 16
£796 GBP
$1,060 USD
View
Price last confirmed 13 days ago
12 more retailers have this diamond
Prices start from £173 GBPSave up to £604 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+
1.29ct Round
£173 GBP