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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 $16,842 AUD
$11,803 USD
As of November 2, 2026
Save $40,209 AUD (70%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $57,051 AUD 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 $16,842 to $57,051, a $40,209 spread on the same certified stone. Taylor and Hart lists it at $57,051. 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: $36,841 AUD|Low: $16,168 AUD|High: $57,051 AUD|Avg: $25,291 AUD|-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$16,842 AUD
Retailer 13$17,515 AUD
Retailer 2$17,802 AUD
Retailer 12$18,310 AUD
Retailer 3$18,862 AUD
Retailer 8$19,263 AUD
Retailer 10$19,537 AUD
Retailer 7$20,729 AUD
Retailer 11$20,834 AUD
Retailer 5$22,623 AUD
Retailer 6$23,556 AUD
Retailer 1$36,841 AUD
Retailer 4$37,840 AUD
Taylor and Hart$57,051 AUD

15 data points across 14 retailers

14 retailers$16,842 AUD to $57,051 AUD

B+
Cheapest Retailer
-
$16,842 AUD
$11,803 USD
B+
Retailer 2
-
$17,515 AUD
$12,275 USD
View
B+
Retailer 3
-
$17,802 AUD
$12,476 USD
View
B+
Retailer 4
-
$18,310 AUD
$12,832 USD
View
B+
Retailer 5
-
$18,862 AUD
$13,219 USD
View
Final sale: no returns
B+
Retailer 6
-
$19,263 AUD
$13,500 USD
View
B+
Retailer 7
-
$19,537 AUD
$13,692 USD
View
Retailer 8
-
$19,537 AUD
$13,692 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$20,729 AUD
$14,527 USD
View
B+
Retailer 10
-
$20,834 AUD
$14,601 USD
View
Retailer 11
-
$23,556 AUD
£12,999 GBP
View
Price last confirmed 14 days ago
B
Retailer 12
-
$36,841 AUD
View
B
Retailer 13
-
$37,840 AUD
$26,519 USD
View
Most Expensive
B
Taylor and Hart
B7WPEKO · Oct 31
$57,051 AUD
$39,982 USD
View
13 more retailers have this diamond
Prices start from $16,842 AUDSave up to $40,209 AUD

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
$16,842 AUD