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Round|Lab Grown|IGI

1.01ct I VS1 Round Lab Grown Diamond

EX • I/VS1 • IGI LG400931913

Shape and cutting style on the report: Round brilliant

Certificate IGI LG400931913

Diamond specifications and retailer prices

From £597 GBP
$800 USD
As of October 31, 2026
Save £690 GBP (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £2,132 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

About this 1.01ct lab-grown round diamond

This 1.01ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG400931913 or 400931913. Listed at 14 retailers as of October 31, 2026, with a 116% 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

1.01
Carat
I
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400931913
Dimensions6.43 × 6.40 × 4.06 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.43 mm6.40 mm1.01 ctI / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG400931913
Side View
Table 53.0%Crown 35°Girdle: MediumPavilion 41.1°Culet: NoneDepth 63.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £2,132 GBP|Low: £597 GBP|High: £3,775 GBP|Avg: £1,828 GBP|+2.7%
Cape Diamonds
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
November 1, 2026
Retailer 10£597 GBP
Retailer 9£999 GBP
Retailer 14£1,119 GBP
Retailer 11£1,160 GBP
Retailer 13£1,160 GBP
Retailer 3£1,287 GBP
Retailer 7£1,304 GBP
Retailer 4£1,577 GBP
Retailer 12£1,834 GBP
Retailer 8£1,982 GBP
Cape Diamonds£2,132 GBP
Retailer 5£2,161 GBP
Retailer 15£2,798 GBP
Retailer 6£3,319 GBP
Retailer 2£3,726 GBP

23 data points across 15 retailers

14 retailers£597 GBP to £1,287 GBP

B
Cheapest Retailer
-
£597 GBP
$800 USD
B
Retailer 2
-
£999 GBP
$1,339 USD
View
B
Retailer 3
-
£1,087 GBP
$1,457 USD
View
B
Retailer 4
-
£1,119 GBP
$1,499 USD
View
Final sale: no returns
Retailer 5
-
£1,160 GBP
$1,554 USD
View
Price last confirmed 20 days ago
B
Retailer 6
-
£1,160 GBP
$1,554 USD
View
B
Retailer 7
-
£1,287 GBP
$1,725 USD
View
Retailer 8
-
£1,834 GBP
$2,457 USD
View
Price under review
Retailer 9
-
£1,982 GBP
€2,529 EUR
View
Price under review
Most Expensive
Cape Diamonds
cert_400931913 · Oct 29
£2,132 GBP
ZAR 46,143 ZAR
View
Price under review
9 more retailers have this diamond
Prices start from £597 GBPSave up to £690 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.

B
1.01ct Round
£597 GBP