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Heart|Lab Grown|IGI

20.49ct G VS1 Heart Lab Grown Diamond

EX • G/VS1 • IGI LG704518235

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG704518235

Diamond specifications and retailer prices

From $11,803 USD
As of November 2, 2026
Save $28,179 USD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $39,982 USD at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 20.49ct lab-grown heart diamond

This 20.49ct lab-grown heart sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG704518235 or 704518235. Listed at 14 retailers as of October 31, 2026, with prices from $11,803 to $39,982, a $28,179 spread on the same certified stone. Taylor and Hart lists it at $39,982. 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

20.49
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.1°
Pavilion angle41.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704518235
Dimensions16.39 × 18.30 × 11.23 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.39 mm18.30 mm20.49 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704518235
Side View
Table 62.0%Crown 40.1°Girdle: MED-THKPavilion 41.5°Culet: NoneDepth 61.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $25,819 USD|Low: $11,331 USD|High: $39,982 USD|Avg: $17,724 USD|-0.2%
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
Taylor and Hart
November 1, 2026
Retailer 9$11,803 USD
Retailer 13$12,275 USD
Retailer 2$12,476 USD
Retailer 12$12,832 USD
Retailer 3$13,219 USD
Retailer 8$13,500 USD
Retailer 10$13,692 USD
Retailer 7$14,527 USD
Retailer 11$14,601 USD
Retailer 5$15,855 USD
Retailer 6$16,508 USD
Retailer 1$25,819 USD
Retailer 4$26,519 USD
Taylor and Hart$39,982 USD

15 data points across 14 retailers

14 retailers$11,803 USD to $39,982 USD

B+
Cheapest Retailer
-
$11,803 USD
B+
Retailer 2
-
$12,275 USD
View
B+
Retailer 3
-
$12,476 USD
View
B+
Retailer 4
-
$12,832 USD
View
B+
Retailer 5
-
$13,219 USD
View
Final sale: no returns
B+
Retailer 6
-
$13,500 USD
View
B+
Retailer 7
-
$13,692 USD
View
Retailer 8
-
$13,692 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$14,527 USD
View
B+
Retailer 10
-
$14,601 USD
View
Retailer 11
-
$16,508 USD
£12,999 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
$25,819 USD
A$39,721 AUD
View
B
Retailer 13
-
$26,519 USD
View
Most Expensive
B
Taylor and Hart
B7WPEKO · Oct 31
$39,982 USD
View
13 more retailers have this diamond
Prices start from $11,803 USDSave up to $28,179 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.

B+
20.49ct Heart
$11,803 USD