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Heart|Lab Grown|IGI

1.00ct I VS1 Heart Lab Grown Diamond

VG • I/VS1 • IGI LG440020546

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG440020546

Diamond specifications and retailer prices

From £1,173 GBP
As of November 5, 2026
Save £1,141 GBP (49%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £2,314 GBP at Flawless Fine Jewelry · As of November 4, 2026
View at Flawless Fine Jewelry

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded I colour (near-colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG440020546 or 440020546. Listed at 9 retailers as of November 4, 2026, with prices from £1,173 to £2,314, a £1,141 spread on the same certified stone. Flawless Fine Jewelry lists it at £2,314. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
I
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
Crown angle44.5°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG440020546
Dimensions5.20 × 5.15 × 4.21 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
5.20 mm5.15 mm1.00 ctI / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateIGI LG440020546
Side View
Table 61.5%Crown 44.5°Girdle: MED-VTKPavilion 38.8°Culet: NoneDepth 81.7%

Caratlytics Score

How it works →
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: Nov 5
Current: £2,314 GBP|Low: £1,089 GBP|High: £2,314 GBP|Avg: £1,549 GBP
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 7£1,173 GBP
Retailer 5£1,188 GBP
Retailer 6£1,299 GBP
Retailer 8£1,337 GBP
Retailer 10£1,389 GBP
Retailer 3£1,453 GBP
Retailer 2£1,571 GBP
Retailer 4£1,749 GBP
Retailer 9£2,132 GBP
Flawless Fine Jewelry£2,314 GBP

30 data points across 10 retailers

9 retailers£1,173 GBP to £2,314 GBP

B
Cheapest Retailer
-
£1,173 GBP
B
Retailer 2
-
£1,188 GBP
View
Final sale: no returns
B
Retailer 3
-
£1,337 GBP
View
C
Retailer 4
-
£1,389 GBP
View
B
Retailer 5
-
£1,453 GBP
View
C
Retailer 6
-
£1,571 GBP
View
Retailer 7
-
£1,749 GBP
View
Price last confirmed 9 days ago
Retailer 8
-
£2,132 GBP
View
Price last confirmed 24 days ago
Most Expensive
C
Flawless Fine Jewelry
C7A53BC77 · Nov 4
£2,314 GBP
View
8 more retailers have this diamond
Prices start from £1,173 GBPSave up to £1,141 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
1.00ct Heart
£1,173 GBP