Radiant|Lab Grown|IGI

3.88ct D VS1 Radiant Lab Grown Diamond

EX • D/VS1 • IGI LG779649686

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG779649686

Diamond specifications and retailer prices

From £478 GBP
$640 USD
As of October 29, 2026
Save £181 GBP (28%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,992 GBP at Frank Darling · As of October 23, 2026
View at Frank Darling

About this 3.88ct lab-grown radiant diamond

This 3.88ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG779649686 or 779649686. Listed at 5 retailers as of October 29, 2026, with a 38% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.88
Carat
D
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779649686
Dimensions11.23 × 7.72 × 5.24 mm
L/W Ratio1.45
Culet sizePointed
Top View
11.23 mm7.72 mm3.88 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779649686
Side View
Table 67.0%Crown 46°Girdle: MediumPavilion 35.9°Culet: NoneDepth 67.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £3,992 GBP|Low: £478 GBP|High: £6,904 GBP|Avg: £2,086 GBP|-5.4%
Frank Darling
Retailer 2
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Retailer 7
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Retailer 15
October 28, 2026
Retailer 2£478 GBP
Retailer 8£659 GBP
Retailer 13£713 GBP
Retailer 12£832 GBP
Retailer 14£886 GBP
Retailer 4£1,175 GBP
Retailer 15£1,182 GBP
Retailer 11£1,676 GBP
Retailer 10£1,854 GBP
Retailer 5£1,987 GBP
Retailer 7£2,311 GBP
Retailer 9£2,709 GBP
Retailer 3£3,545 GBP
Frank Darling£3,992 GBP
Retailer 6£6,904 GBP

6 data points across 15 retailers

5 retailers£478 GBP to £659 GBP

A
Cheapest Retailer
-
£478 GBP
$640 USD
Final sale: no returns
B+
Retailer 2
-
£659 GBP
$883 USD
View
Retailer 3
-
£2,311 GBP
A$4,763 AUD
View
Price last confirmed 118 days ago
Retailer 4
-
£2,709 GBP
$3,630 USD
View
Price last confirmed 11 days ago
Most Expensive
Frank Darling
100765896104KD · Oct 23
£3,992 GBP
$5,348 USD
View
Price last confirmed 7 days ago
4 more retailers have this diamond
Prices start from £478 GBPSave up to £181 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
3.88ct Radiant
£478 GBP