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Round|Lab Grown|IGI

1.00ct D VS1 Round Lab Grown Diamond

EX • D/VS1 • IGI LG818644852

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644852

Diamond specifications and retailer prices

From £125 GBP
$167 USD
As of October 29, 2026
Save £692 GBP (85%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £1,345 GBP at Queensmith · As of October 27, 2026
View at Queensmith

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818644852 or 818644852. Listed at 24 retailers as of October 28, 2026, with a 552% 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

1.00
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644852
Dimensions6.42 × 6.46 × 3.93 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
6.42 mm6.46 mm1.00 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644852
Side View
Table 54.0%Crown 32.7°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 61.0%

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 29
Current: £275 GBP|Low: £120 GBP|High: £735 GBP|Avg: £324 GBP|+5.2%
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
October 29, 2026
Retailer 14£125 GBP
Retailer 3£155 GBP
Retailer 12£173 GBP
Retailer 2£210 GBP
Retailer 5£216 GBP
Retailer 8£265 GBP
Retailer 10£267 GBP
Retailer 7£267 GBP
Retailer 1£275 GBP
Retailer 11£379 GBP
Retailer 13£409 GBP
Retailer 6£446 GBP
Retailer 4£510 GBP
Retailer 9£731 GBP

36 data points across 14 retailers

24 retailers£125 GBP to £817 GBP

A
Cheapest Retailer
-
£125 GBP
$167 USD
A
Retailer 2
-
£140 GBP
$187 USD
View
Final sale: no returns
A
Retailer 3
-
£146 GBP
$194 USD
View
A
Retailer 4
-
£155 GBP
$207 USD
View
A
Retailer 5
-
£155 GBP
$207 USD
View
A
Retailer 6
-
£173 GBP
HK$1,800 HKD
View
B+
Retailer 7
-
£210 GBP
$280 USD
View
A
Retailer 8
-
£216 GBP
$287 USD
View
B+
Retailer 9
-
£265 GBP
View
B+
Retailer 10
-
£267 GBP
ZAR 5,741 ZAR
View
B+
Retailer 11
-
£267 GBP
€339 EUR
View
B+
Retailer 12
-
£275 GBP
View
B+
Retailer 13
-
£336 GBP
$448 USD
View
B+
Retailer 14
-
£379 GBP
A$776 AUD
View
B+
Retailer 15
-
£409 GBP
$544 USD
View
B
Retailer 16
-
£426 GBP
SGD 766 SGD
View
B
Retailer 17
-
£446 GBP
A$913 AUD
View
Price last confirmed 32 days ago
B
Retailer 18
-
£499 GBP
$665 USD
View
B
Retailer 19
-
£510 GBP
$679 USD
View
B
Retailer 20
-
£541 GBP
$720 USD
View
B
Retailer 21
-
£661 GBP
$880 USD
View
Price last confirmed 39 days ago
B
Retailer 22
-
£731 GBP
View
B
Retailer 23
-
£817 GBP
$1,088 USD
View
Most Expensive
B
Queensmith
LG818644852 · Oct 27
£1,345 GBP
View
Price under review
23 more retailers have this diamond
Prices start from £125 GBPSave up to £692 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
1.00ct Round
£125 GBP