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Radiant|Lab Grown|IGI

6.78ct D VVS2 Radiant Lab Grown Diamond

ID • D/VVS2 • IGI LG842631327

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

Certificate IGI LG842631327

Diamond specifications and retailer prices

From $3,663 SGD
$2,864 USD
As of November 1, 2026
Save $9,955 SGD (73%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $13,618 SGD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 6.78ct lab-grown radiant diamond

This 6.78ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG842631327 or 842631327. Listed at 16 retailers as of October 31, 2026, with prices from $3,663 to $13,618, a $9,955 spread on the same certified stone. Taylor and Hart lists it at $13,618. 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

6.78
Carat
D
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.1°
Pavilion angle34.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842631327
Dimensions13.39 × 9.32 × 6.13 mm
L/W Ratio1.44
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.39 mm9.32 mm6.78 ctD / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842631327
Side View
Table 68.0%Crown 42.1°Girdle: MED-STKPavilion 34.3°Culet: NoneDepth 65.8%

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: Nov 1
Current: $4,086 SGD|Low: $3,663 SGD|High: $14,011 SGD|Avg: $7,096 SGD|-3.3%
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
Retailer 15
Taylor and Hart
November 3, 2026
Retailer 2$3,663 SGD
Retailer 5$3,770 SGD
Retailer 14$4,019 SGD
Retailer 1$4,086 SGD
Retailer 8$5,243 SGD
Retailer 13$5,548 SGD
Retailer 11$5,696 SGD
Retailer 12$6,849 SGD
Retailer 10$6,943 SGD
Retailer 3$7,235 SGD
Retailer 15$7,367 SGD
Retailer 6$7,601 SGD
Retailer 4$8,595 SGD
Retailer 7$9,981 SGD
Retailer 9$10,395 SGD
Taylor and Hart$13,618 SGD

25 data points across 16 retailers

16 retailers$3,663 SGD to $13,618 SGD

A
Cheapest Retailer
-
$3,663 SGD
$2,864 USD
A
Retailer 2
-
$3,770 SGD
$2,948 USD
View
Final sale: no returns
A
Retailer 3
-
$4,019 SGD
£2,474 GBP
View
A
Retailer 4
-
$4,086 SGD
$3,195 USD
View
B+
Retailer 5
-
$5,243 SGD
£3,228 GBP
View
B+
Retailer 6
-
$5,548 SGD
$4,338 USD
View
B+
Retailer 7
-
$5,696 SGD
$4,454 USD
View
B+
Retailer 8
-
$6,849 SGD
€5,100 EUR
View
B+
Retailer 9
-
$6,943 SGD
$5,429 USD
View
B+
Retailer 10
-
$7,235 SGD
A$8,703 AUD
View
B+
Retailer 11
-
$7,367 SGD
£4,536 GBP
View
B+
Retailer 12
-
$7,601 SGD
ZAR 96,012 ZAR
View
B
Retailer 13
-
$8,595 SGD
A$10,340 AUD
View
B
Retailer 14
-
$9,981 SGD
$7,804 USD
View
B
Retailer 15
-
$10,395 SGD
£6,400 GBP
View
Most Expensive
B
Taylor and Hart
HGM0G23 · Oct 31
$13,618 SGD
$10,648 USD
View
15 more retailers have this diamond
Prices start from $3,663 SGDSave up to $9,955 SGD

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
6.78ct Radiant
$3,663 SGD