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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 $20,986 NZD
$11,803 USD
As of November 2, 2026
Save $50,103 NZD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $71,089 NZD 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 $20,986 to $71,089, a $50,103 spread on the same certified stone. Taylor and Hart lists it at $71,089. 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
Colour
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: $45,906 NZD|Low: $20,147 NZD|High: $71,089 NZD|Avg: $31,514 NZD|-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$20,986 NZD
Retailer 13$21,825 NZD
Retailer 2$22,182 NZD
Retailer 12$22,815 NZD
Retailer 3$23,503 NZD
Retailer 8$24,003 NZD
Retailer 10$24,344 NZD
Retailer 7$25,829 NZD
Retailer 11$25,961 NZD
Retailer 5$28,190 NZD
Retailer 6$29,352 NZD
Retailer 1$45,906 NZD
Retailer 4$47,151 NZD
Taylor and Hart$71,089 NZD

15 data points across 14 retailers

14 retailers$20,986 NZD to $71,089 NZD

B+
Cheapest Retailer
-
$20,986 NZD
$11,803 USD
B+
Retailer 2
-
$21,825 NZD
$12,275 USD
View
B+
Retailer 3
-
$22,182 NZD
$12,476 USD
View
B+
Retailer 4
-
$22,815 NZD
$12,832 USD
View
B+
Retailer 5
-
$23,503 NZD
$13,219 USD
View
Final sale: no returns
B+
Retailer 6
-
$24,003 NZD
$13,500 USD
View
B+
Retailer 7
-
$24,344 NZD
$13,692 USD
View
Retailer 8
-
$24,344 NZD
$13,692 USD
View
Price last confirmed 22 days ago
B+
Retailer 9
-
$25,829 NZD
$14,527 USD
View
B+
Retailer 10
-
$25,961 NZD
$14,601 USD
View
Retailer 11
-
$29,352 NZD
£12,999 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
$45,906 NZD
A$39,721 AUD
View
B
Retailer 13
-
$47,151 NZD
$26,519 USD
View
Most Expensive
B
Taylor and Hart
B7WPEKO · Oct 31
$71,089 NZD
$39,982 USD
View
13 more retailers have this diamond
Prices start from $20,986 NZDSave up to $50,103 NZD

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
$20,986 NZD