Heart|Lab Grown|IGI

1.66ct F VVS1 Heart Lab Grown Diamond

VG • F/VVS1 • IGI LGG1203217

Certificate IGI LGG1203217

Diamond specifications and retailer prices

From $283 USD
As of November 1, 2026
Save $995 USD (78%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,278 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 1.66ct lab-grown heart diamond

This 1.66ct lab-grown heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LGG1203217. Listed at 5 retailers as of October 31, 2026, with prices from $283 to $1,278, a $995 spread on the same certified stone. Taylor and Hart lists it at $1,278. 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

1.66
Carat
F
Color
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LGG1203217
Dimensions7.40 × 8.06 × 4.75 mm
L/W Ratio1.09
Top View
7.40 mm8.06 mm1.66 ctF / VVS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LGG1203217
Side View
Table 49.5%CrownGirdle: MED-STKPavilionCulet: NoneDepth 58.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $365 USD|Low: $283 USD|High: $1,345 USD|Avg: $767 USD|-0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Taylor and Hart
November 2, 2026
Retailer 3$283 USD
Retailer 1$365 USD
Retailer 4$475 USD
Retailer 2$609 USD
Taylor and Hart$1,278 USD
Retailer 5$1,345 USD

40 data points across 6 retailers

5 retailers$283 USD to $1,278 USD

A
Cheapest Retailer
-
$283 USD
Final sale: no returns
A
Retailer 2
-
$365 USD
£288 GBP
View
A
Retailer 3
-
$475 USD
View
B+
Retailer 4
-
$609 USD
£480 GBP
View
Most Expensive
B
Taylor and Hart
KXZBNVW · Oct 31
$1,278 USD
View
4 more retailers have this diamond
Prices start from $283 USDSave up to $995 USD

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
1.66ct Heart
$283 USD